Aimed at the weights combinatorial problems of forcetype 100 kN force standard machine, the values of a finite number of combinations of weight force were obtained by analyzing. The theoretical analysis of force value sorting and filtering was carried out, and weights combinational algorithm was proposed. For practical application, the impact on the loading process in the different weights code combinations was discussed, an improved bubble method was based on to determine the optimal combination, and to provide a new algorithm for realistic weight load combination of the force standard machine. Through the practical application, it was verified that the weight combination algorithm has a more significant effect in the test.